Assumed knowledge: Basic Photoshop skills, layers, blends and renders.
Concepts covered: Using a series of blends to create a good looking sig with no brushesIf your fairly new to Photoshop or are just sick of the same brush based sigs and want to try something new then this tutorial is for you. This tutorial will run thru how to make a sig such as this one:

To begin with create a new Photoshop document. I’d set the size to be around 350 by 100 or similar. Then open up the file which contains your render. The render doesn’t need to be anything special, I’d suggest something that has colours similar to the colours that you want in the final version. Press Cntrl + A or from the main menu Select>>All. Then press Cntrl + X or Edit>>Cut and then paste(Cnrl + V or Edit>>Paste) in the document with your sig. Adjust the render so that its it a nice position.

Its not required but I recommend that you clear any background that you have as it will appear in the final version. Just select the magic wand tool from the tool menu and select and delete. It doesn’t have to be a perfect job. Duplicate the render by right clicking and selecting duplicate layer.

Select the above render layer and the from the main menu select Filter>>Blur>>Gaussian blur and then set the blur to 15.

Duplicate the layer. On the duplicate layer select Filter>>Blur>>Motion Blur and set the angle to be 35 degrees and the distance to about 99.

Next we need to rotate the image to cover the whole canvas. Select Edit>>Transform>>Rotate 180 degree. Then duplicate the rotated layer, this should cover up the rest of the canvas.

Now go back to the original render and bring it to the top. Select Filter>>Blur>>Motion Blur and then set the specifications to an angle of 13 degrees and distance to over 200. Then select Filter>>Brush strokes>>Spatter and select similar specs to these:

Then duplicate that layer and on the duplicate layer select Edit>.Transform>>Flip Horizontal. Then right click on the layer and select Blending options, then set the type of blend to Overlay.

So far this is what I have so far:

Not bad so far. Since writing this I’ve realised that other effects work really well. A light film grain filter works well, also if you change the angle/strength of the motion blur then you can get a different flow for the signature. I recommend that you play around as you go and see what stuff you can make.

Next select Layer>>New Layer>>Layer… then Image>>Apply Image and set the options to a default setting. Then set the type of blend to Hard light and netx select Filter>>Sketch>>Water Paper wth the following specs:

Head down to the two motion blured layers, one that blurs to the right and one that blurs to the left. Duplicate each layer and put them ontop with a blend set to Opacity.

To finish off I did another applied image and set the blend to Hard light with a 35% opacity.

From there just add some text in and a 1 stroke border with an Overlay or Soft light blend.

Thats how you do it! Try to mix and match. What I just showed was fairly complex but you can capitalize on some nice effects. Here are 2 samples sigs that I whipped up in a few minutes using this tutorial.